Automatic temperature-regulator.



No. 657,677. Patented Sept. ll, I900. A. ROESCH.

AUTOMATIC TEMPERATURE REGULATOR.

(Application {5 my 9, 1898.)

3 Sheets-Sheet I.

(lo'ilodeL) mg! E w \Z A ATTORNEY N0. 657,677. Patented Sept. ll, I900.

A. RUESCH.

AUTOMATIC TEMPERATURE REGULATOR.

(Application filed May 9, 1898.)

(No Model.) 3 Sheets-Sheet 2.

a? WITNESSES: INVENTOR w: Norms PETERS co, PHOTO-LITHO.. wasumo'ron, o.c.

Patented Sept. ll,"l900.

A. RUESCH.

AUTOMATIC TEMPERATURE REGULATOR.

(Application filed May 9, 1398.

3 Sheets-8heet 3.

(No Model.)

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UNITED STATES PATENT OFFICE.

ALFRED ROESCI-I, OF BRIDGEPORT, CONNECTICUT, ASSIGNOR TO THE DAVIS &ROESCH TEMPERATURE CONTROLLING COMPANY, OF NEl/V JERSEY.

AUTOMATIC TEMPERATURE-REGULATOR.

SPECIFICATION forming part of Letters Patent No. 657,677, datedSeptember 11, 1900.

Application filed May 9, 1898. Serial No. 680,104. (No model.)

To all whom it may concern: having heads a and a bolted thereto. A (lia-Be it known that I, ALFRED ROESOH, a citiphragm b divides said casinginto two sepazen of the United States of America, and a ratechambersEandF. Leadinginto chamber resident of Bridgeport, county of Fairfield, E isa pipe G. The outer end of pipe G is 55 5 State of Connecticut, haveinvented certain formed with branches 9 and g, one located new anduseful Improvements in Automatic above the other, having nozzles turnedin- Temperature-Regulators, of which the folward toward each other. Pipe9 forms an lowing is a specification. air-intake through which air isadmitted My invention relates to devices for governthrough pipe G tochamber E. Within said 6o ing the temperature of a room, and has foritsintake is check-valvef, which prevents the object the provision of asimple and eifective return of air therethrough. Pipe g forms an deviceunder control of a thermostat for conoutlet from chamber E through pipeG and trolling the admission and exhaust of fluidis provided with acheck-valve f, which propressure to and from a fluid-actuated valve,vents the inflow of air through said pipe. It 65 i damper, or similarmechanism; and to this will thus be seen that by the movement of endmyinvention consists of adiaphragm the diaphragm Z) chamber E is filledwith air movement of which controls the passage of through intake 9 andair is expelled thereair from an air-reservoir to such controlling fromthrough outlet g. Said inlet and outmeans in a heating system as may bedelet openings are controlled by valves 7t h, 70 2o sired, in this casea steam-supply valve for carried by springs i 2', which springs act to aradiator, the movement of the diaphragm hold said valves to their seatsand normally being itself controlled by the opening and close saidopenings. Thermostat A is of orclosing of air-valves to its inclosingchamber dinary construction and carries an arm A, by a thermostat.formed with a bifurcated end, or arms carry- 75 My invention furtherconsists in certain ing adjusting-screws 7c and 70, so adjusted as novelcombinations of parts and details of to respectively contact withsprings i t" and construction, as will be hereinafter morefully by aslight movement force the valves 7L 7L, described. which they carry,from their seats. Chamber Figure 1 is a general view of the device and Fcommunicates through pipe H with the air- 80 its connections. Fig. 2 isa side elevation of reservoir D and with the atmosphere through thethermostat and valves operated thereby pipe I. Pipe K leads from saidchamber to and shows longitudinal sections of the parts steam supply andreturn valves C C in radicontrolled by said valves. Fig. 3 is alongiator R. These valves may by any well-known tudinal section of thediaphragm-chamber means be closed by the pressure of air ad- 85 anddiaphragm and of the valve-chamber mitted from chamber F through pipe Kand with its valve-controlling device. Fig. 4: opened by springs y ywhen said air is exshows a slight variation in the form of my. hansted.Pipes H and Ilead into the interior device, where the inlet and outletports conof chamber F and are inclined toward each trolled by thethermostat are directly conother therein. J is a valve controlling the90 4o nected with the diaphragm-chamber instead openings in said pipes,and consists of a lever of to apipe leading from said chamber. Fig.pivoted at Z, formed at its outer end with 5 is a modification of myimprovement in valves which alternately close and open the which asecond diaphragm is used. Fig. 6 is openingsinto pipes HandIand atitsother end the thermostat with its connecting-arm havformed with anincline terminating at a point 5 ing its end bifurcated. u. Said valveis held to its seat and actuated Similar reference characters designatecorby the following mechanism: Connected to responding parts in allfigures. diaphragm b is a rod m, whlch moves up My improvement comprisesin general a and down with said'diaphragm throughholthermostatA,valve-chamberB,steam-valves low sleeve '21. Rod m isenlargednear its :00

C C, air-reservoir D, and radiator R. lower end, and when it movesupwardly such Referring to Fig. 3, a is a valve-casing enlarged portioncontacts with said hollow sleeve The sleeve 11 is mounted to slide 1same instead of connecting same some disfreely in projections n a in thecasing a. Stops n a limit the movement of the sleeve '11. Attached tosleeve 'n is bracket 19, carrying arm 1, pivoted to said bracket at sand hav ing at its outer end a roller 6. A coiled spring o retains saidarm in proper position and allows a movement of said arm on said pivots.Roller t contacts with said valve J and holds it firmly to its seat whendiaphragm b is at rest. When said diaphragm is actuated, how ever, andnear the end of its movement, rod mstrikes the sleeve 72, carrying thesaid sleeve and with it the arm 7' and appurtenances for the remainderof its movement, which movement of arm 7- and roller t forces said valveto its alternate position, thus opening one of its ports and closing theother.

The operation of the device is as follows: As shown in the drawings, theparts are in the position assumed when the temperature is above a pointat which the thermostat A is adjusted to move valve h from its seat bycontraction due to the fall in temperature. Chamber E is filled withair. Chamber F is in open communication with air-reservoir D and is thusunder reservoir-pressure, which pressure acts through pipe K to forcevalves 0 to their seats and shut off the steam-supply to radiator R.Spring T in chamber E, together with the air therein, (which-is prevented from escaping through pipe G and branch g by valve h,) holdsdiaphragm Z) in its downward position against the reservoirpressure inchamber F. The different parts continue in their relative positionsuntil through the fall in temperature thermostat A contractssufliciently to move valve h from its seat and close valve h, when thereservoirpressure in chamber B will immediately raise diaphragm b andwith it rod 'in and sleeve a with arm 0', forcing roller 25 past point uopening exhaust I and closing inlet-port in pipe H. Chamber F thus beingcut off from reservoir-pressure and the exhaust being open, air willexhaust therefrom and through said chamber from valve-chambers C C andperunit said valve C C through the action of springs y y to open toadmit steam to the radiator. The parts will remain in this positionuntil the temperature has been raised sufiiciently to expand thermostatA and permit valve h to seat, which movement will also raise valve infrom its seat, for until this occurs diaphragm b will not return to itsdownward position (to which position it is moved by tension of spring T)because the inlet-port being closed prevents this movement. When,however, valve 7b is moved from its seat, the diaphragm Z) isinoveddownward, and the rod m and sleeve 47. with arm r are carried withit and the parts again assume the positions shown in the drawings.

shown in Fig. 4-, the branch pipes g g may, if desired, be placed uponthe casinghead a and the thermostat immediately over tance away througha pipe, as G.

Referring now to Fig. 5, I have shown, as will be seen, an auxiliarydiaphragm and diaphragm-chamberUand U. Branch pipes V and V communicatewith the upper and lower side of the chamber U and are controlled byvalves h h, mounted on springs t" and operated through a thermostat-armA, as previouslydescribed in the other figures. Small figure to theright shows the thermostat A with the connecting-arm A. This thermostatmay be located at any point convenient to the device with which it isconnected. The diaphragm U is connected to the diaphragm b by a rod W,which passes through a stuffing-box and gland in through the chamber U.A spring w surrounds the rod W and tends to keep the dia )hragm in theposition shown in this figure. When the thermostat-arm A rises owing tothe contraction of the thermostat, air is admitted through the branch Vto the under side of the diaphragm U, and thus releasing the air-lockpermits the airpressure in the chamber F from the reservoir D to raisethe diaphragm l) and carry with it the diaphragm U. The parts being newin the opposite positions to that shown in Fig. 5 and the valve J havingcut off the air-pressure in the chamber F and opened it to theatmosphere, immediately the thermostat-arm A lowers the spring it) willreturn the parts to the first position, air be ing taken in through thebranch V and expelled through the branch V.

\Vhat I claim is- 1. A governor for controlling the supply of compressedfluid to fluid-actuated mechanism consisting of a diaphragm-chamber anddiaphragm, ports from the chamber on one side of the diaphragm leadingto the supply of compressed fluid,to the fluid-actuated mechanism and tothe atmosphere, valves mounted on a rocker-arm adapted to alternatelyopen and close the port to the supply of compressed air and the exhaustto atmosphere, means operated by the movement of the diaphragm forgoverning said valve and means operated by a thermostat for controllingthe movement of the diaphragm, substantially as described.

2. A governor for controlling the supply of compressed fluid tofluid-actuated mechanism, consisting of a diaphragm-chamber anddiaphragm, ports from the chamber on one side of the diaphragm leadingto the supply of compressed fluid, to the fluid-actuated mechanism andto the atmosphere, means operated by the movement of the diaphragm foralternately opening and closing the port to the supply of compressed airand the exhaust to atmosphere and an inlet and an outlet portcommunicating with the atmosphere connected with the chamber on theother side of the diaphragm, having valves controlled by a thermostat,substantially as described.

3. A governor for controlling the supply of compressed fluid tofluid-actuated mechanism consisting of a diaphragm-chamber anddiaphragm, ports from the chamber on one side of the diaphragm leadingto the supply of compressed fluid, to the fluid -actuated mechanism andto the atmosphere, means 0perated by the movement of the diaphragm foralternately opening and closing the port to the supply of compressed airand the exhaust to atmosphere and an inlet and an outlet portcommunicating with the atmosphere connected with the chamber on theother side of the diaphragm, valves under the control of a thermostatfor opening and closing said ports and check-valves within said portsfor preventing the ingress of fluid of the one and the egress of fluidin the other, substantially as specified.

4. A governor for controlling the supply of compressed fluid tofluid-actuated mechanism, consisting of a diaphragm-chamberanddiaphragm, ports from the chamber on one side of the diaphragm leadingto the supply of compressed fluid, to the fluid -actuated mechanism andto the atmosphere, a rockerarm mounted Within said chamber, valvesmounted on said rocker-arm and adapted to alternately open and close theport to the supply of compressed air and the exhaust to atmosphere, anarm controlled by the movement of the diaphragm to trip said rockerarm,and an inlet and an outlet port connected with the chamber on the otherside of the diaphragm having valves controlled by a thermostat,substantially as specified.

5. A governor for controlling the supply of compressed fluid tofluid-actuated mechanism consisting of a diaphragm-chamber anddiaphragm, ports from the chamber on one side of the diaphragm leadingto the supply of compressed fluid, to the fluid-actuated mechanism andto the atmosphere, valves mounted on a rocker-arm adapted to alternatelyopen and close the port to the supply of compressed air and the exhaustto atmosphere, means operated by the movement of the diaphragm forgoverning said valves, a spring operating to move the diaphragm in onedirection and means operated by a thermostat for controlling themovement of the diaphragm, substantially as described.

6. A governor for controlling the supply of compressedfluid tofluid-actuated mechanism consisting of a diaphragm-chamber anddiaphragm, ports from the chamber on one side of the diaphragm leadingto the supply of compressed fluid, to the fluid-actuated mechanism andto the atmosphere, a rockerarm mounted Within said chamber, valvesmounted on said rocker-arm and adapted to alternately open and close theport to the supply of compressed air and the exhaust to atmosphere, anarm carried by a sleeve having a limited movement Within thediaphragmchamber and adapted to throw the rockerarm first in onedirection and then in the other, means carried by the diaphragm to causesuch limited movement of said sleeve at the end of its stroke, and meansoperated by a thermostat for controlling the movement of the diaphragm,substantially as described.

Signed by me in the city, county, and State of New York this 21st day ofApril, 1898.

ALFRED ROESCII.

\Vitnesses:

J AMES C. CHAPIN, J NO. S. PARKER.

